I am new to paintball and got an MR1 for xmas. Used it for about 5 hours so far, now having problems with it.

When I shoot, it sounds ok, but the paint literally goes like 5 feet. Had a few guys look at it....took it apart and re-assembled, no luck. All orings look good, everything fits together nicely. Tried multiple tanks.

make sure that when everyone was taking it appart and putting it back together they never put the striker buffer infront of the striker. would give the symptoms you described. Go back to the first time you had trouble with it. Were you using it then it acted up, did you just air it up to play and it wouldnt work properly? Let us know.